Lifespan, ageing, and relevant traits

The implantation can be delayed in these animals, depending on the time of the year. In the wild, it has been estimated that they live up to 3 years [0542]. One captive specimen lived 4.5 years [0671].

Life history traits (averages)

Female sexual maturity

45 days

Male sexual maturity

Gestation

21 days

Weaning

25 days

Litter size

6.8 (viviparous)

Litters per year

Inter-litter interval

51 days

Weight at birth

2.6 g

Weight at weaning

Adult weight

47.4 g

Postnatal growth rate

Maximum longevity residual

51%

Metabolism

Typical body temperature

308ºK or 35.3ºC or 95.5ºF

Basal metabolic rate

0.2740 W

Body mass

68.1 g

Metabolic rate per body mass

0.004023 W/g

References

[0671] Richard Weigl (2005), Longevity of Mammals in Captivity; from the Living Collections of the World